JPS5618928B2 - - Google Patents
Info
- Publication number
- JPS5618928B2 JPS5618928B2 JP269972A JP269972A JPS5618928B2 JP S5618928 B2 JPS5618928 B2 JP S5618928B2 JP 269972 A JP269972 A JP 269972A JP 269972 A JP269972 A JP 269972A JP S5618928 B2 JPS5618928 B2 JP S5618928B2
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/34—Systems for automatic generation of focusing signals using different areas in a pupil plane
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
- Exposure Control For Cameras (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP269972A JPS5618928B2 (en) | 1971-12-29 | 1971-12-29 | |
| US00316514A US3830571A (en) | 1971-12-29 | 1972-12-19 | Automatic focusing device also capable of photometry |
| GB5879672A GB1419389A (en) | 1971-12-29 | 1972-12-20 | Automatic focusing device also capable of photometry |
| DE2263616A DE2263616C3 (en) | 1971-12-29 | 1972-12-27 | Automatic focusing device |
| CH1895672A CH558024A (en) | 1971-12-29 | 1972-12-28 | OPTICAL DEVICE WITH AN AUTOMATIC FOCUSING DEVICE. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP269972A JPS5618928B2 (en) | 1971-12-29 | 1971-12-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4874840A JPS4874840A (en) | 1973-10-09 |
| JPS5618928B2 true JPS5618928B2 (en) | 1981-05-02 |
Family
ID=11536511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP269972A Expired JPS5618928B2 (en) | 1971-12-29 | 1971-12-29 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3830571A (en) |
| JP (1) | JPS5618928B2 (en) |
| CH (1) | CH558024A (en) |
| DE (1) | DE2263616C3 (en) |
| GB (1) | GB1419389A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625648B2 (en) * | 1973-04-11 | 1981-06-13 | ||
| US3961178A (en) * | 1973-10-23 | 1976-06-01 | Canon Kabushiki Kaisha | Image sharpness detecting system and apparatus utilizing the same |
| DE2356757C2 (en) * | 1973-11-14 | 1982-04-08 | Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar | Device for determining the relative position of the plane of maximum amplitude of a spatial frequency |
| JPS5091317A (en) * | 1973-12-12 | 1975-07-22 | ||
| DE2406045C2 (en) * | 1974-02-08 | 1983-03-17 | Canon Inc., Tokyo | Arrangement consisting of at least two photoelectric conversion elements |
| DE2436528C2 (en) * | 1974-07-29 | 1982-11-25 | Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar | Electro-optical focusing device |
| US4104650A (en) * | 1974-08-16 | 1978-08-01 | Canon Kabushiki Kaisha | Sharp focus detecting system |
| DE2705104A1 (en) * | 1977-02-08 | 1978-08-10 | Agfa Gevaert Ag | PHOTOGRAPHIC OR KINEMATOGRAPHIC CAMERA |
| DE2801383A1 (en) * | 1978-01-13 | 1979-07-19 | Agfa Gevaert Ag | PHOTOGRAPHIC CAMERA WITH A FOCUSING DEVICE |
| US4774539A (en) * | 1986-10-01 | 1988-09-27 | Canon Kabushiki Kaisha | Camera having a focus detecting apparatus |
| US4810091A (en) * | 1987-12-30 | 1989-03-07 | Hewlett-Packard Company | Apparatus and method for adjusting focus of a multi-element optical detector |
| JP2726346B2 (en) * | 1991-12-25 | 1998-03-11 | 佐原 今朝徳 | Automatic focusing mechanism of surgical microscope |
| CN105652100B (en) * | 2016-02-18 | 2018-07-10 | 北京工业大学 | Photoelectric tube pulsewidth controllable measuring device and its application method |
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1971
- 1971-12-29 JP JP269972A patent/JPS5618928B2/ja not_active Expired
-
1972
- 1972-12-19 US US00316514A patent/US3830571A/en not_active Expired - Lifetime
- 1972-12-20 GB GB5879672A patent/GB1419389A/en not_active Expired
- 1972-12-27 DE DE2263616A patent/DE2263616C3/en not_active Expired
- 1972-12-28 CH CH1895672A patent/CH558024A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4874840A (en) | 1973-10-09 |
| DE2263616B2 (en) | 1975-03-20 |
| GB1419389A (en) | 1975-12-31 |
| CH558024A (en) | 1975-01-15 |
| DE2263616C3 (en) | 1975-11-13 |
| US3830571A (en) | 1974-08-20 |
| DE2263616A1 (en) | 1973-07-05 |